Conoco Hydroclear Ultra-Clean Multipurpose R&O Oil is a premium quality, ashless, rust and oxidation (R&O)-inhibited mineral oil developed for the lubrication of industrial equipment requiring an ultra-clean, general-purpose circulating oil. It combines the same high-performance characteristics as our regular Multipurpose R&O Oil with the added advantage of fine filtration to a typical ISO Cleanliness Code of 17/15/11, for use in circulating systems with tight tolerances where particle contamination can cause operational problems.

Hydroclear Ultra-Clean Multipurpose R&O Oil is available in four viscosity grades: ISO 32, 46, 68 and 100. It is formulated with high-quality, hydrocracked base oils and an ashless, zinc-free antiwear additive package. It has excellent oxidation resistance and thermal stability at high temperatures to minimize sludge and varnish formation, and provide long service life. It protects system components against rust, corrosion and wear. It has excellent water-separating properties to minimize the formation of emulsions, and is resistant to excessive foam buildup that can interfere with proper lubrication.

Hydroclear Ultra-Clean Multipurpose R&O Oil, ISO VG 46, is approved by Alstom under their HTGD 90117 specification for bearing lubrication in their geared turbines.
Unit of Measure


ISO Grade

N/A 32

AGMA Grade

N/A 0

Density @ 15.6 ºC (60 ºF)

N/A 0.859 g/cm³7.15 lbs/gal
Color1 N/A L 0.5

Flash Point (COC)

N/A 232 ºC450 ºF

Pour Point

N/A -40 ºC-40 ºF

Viscosity @ 40ºC

N/A 32.5 cSt

Viscosity @ 100ºC

N/A 5.4 cSt

Viscosity @ 100ºF

N/A 168 SUS

Viscosity @ 210ºF

N/A 44.4 SUS

Viscosity Index

N/A 101
Copper Corrosion2 N/A 1a
Demulsibility, Minutes to Pass3 N/A 10
Four-Ball Wear Scar Diameter4 N/A 0.54 mm
FZG Gear Test, Pass Load Stage5 N/A 9
Oxidation Stability, TOST6 N/A 4000 hrs
Oxidation Stability, RPVOT7 N/A 750 min
Rust Test8 N/A Pass
Cleanliness Code9 N/A 17/15/11



  • Circulating systems where fluid cleanliness is critical
  • Air tools and other pneumatic equipment lubricated through air line lubricators
  • Centrifugal pumps
  • Direct-drive and geared steam turbines
  • Hydraulic systems operating at pressures less than 2000 psi
  • Lightly loaded industrial gearboxes that do not require an extreme-pressure (EP) gear oil
  • Older single-stage and some multi-stage reciprocating and rotary air compressors
  • Oil-filled flexible couplings
Hydroclear Ultra-Clean Multipurpose R&O Oil meets the requirements of :
  • ABB-Alstom HTGD 90117 for geared turbines
  • Cincinnati Lamb Specifications P-38 (ISO VG 32), P-55 (ISO VG 46), P-54 (ISO VG 68)
  • Vickers (Eaton) I-286-S



  • Excellent oxidation resistance and thermal stability for long service life
  • Ashless (non-zinc) antiwear additive for protection against wear
  • Protects against sludge and varnish formation
  • Excellent water-separating properties
  • Protects against rust and corrosion
  • Good foam resistance
  • Meets ISO Cleanliness Code rating of 17/15/11.
    Note: Applies only to unopened packaged containers as delivered from ConocoPhillips manufacturing plants. Particle counts may vary from lab to lab.

Health and Safety Information

N/A For recommendations on safe handling and use of this product, please refer to the Material Safety Data Sheet via

Ordering Information

Package Type

N/A 5G Pail

Pricing Information

N/A Price/Gal

Shipping Note

N/A 39 lb

  • 1 ASTM D-1500
  • 2 ASTM D-130
  • 3 ASTM D-1401
  • 4 ASTM D-4172
  • 5 ASTM D-5182
  • 6 ASTM D-943
  • 7 ASTM D-2272
  • 8 ASTM D-665 A&B
  • 9 ISO 4406:1999